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annotate chapter9/WithPrintWriter2.scala @ 0:b316eec6fa7a draft default tip

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add sample files
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 08 Jan 2013 16:41:46 +0900
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 object WithPrintWriter2 {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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2
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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3 def main(args: Array[String]) {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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4 val fiel =new File("data.txt")
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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5 withPrintWriter(file) {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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6 writer => writer.println(new java.util.Data)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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7 }
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 }
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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9
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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10 def withPrintWriter(file: File)(op: PrintWriter => Unit) {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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11 val writer = new PrintWriter(file)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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12 try {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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13 op(writer)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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14 } finally {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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15 writer.close()
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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16 }
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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17 }
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 }
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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